On-line measurement device for rhelogical property of drilling fluid

The invention relates to an on-line measurement device for the rhelogical property of drilling fluid, in particular to an automatic on-line measurement device for the rhelogical property of the drilling fluid, which belongs to the field of measurement for the rhelogical property of the drilling fluid and is applicable to automatic on-line measurement for the rhelogical property of field drilling fluid. The on-line measurement device comprises a pump, a flow meter and two rectangular cross-section pipes, wherein the two rectangular cross-section pipes are different in cross section area and are sequentially connected by a pipeline, and the end parts of inlets and outlets of the two rectangular cross-section pipes are provided with pressure sensors respectively. The on-line measurement device solves the problems existing in the general drilling fluid rhelogical property measurement, the measurement precision is improved, and the automation of the drilling fluid rhelogical property measurement is realized.